Petroleum Science >2011,??Issue 4:??463-476 DOI: https://doi.org/10.1007/s12182-011-0164-7
Surfactant induced reservoir wettability alteration: Recent theoretical and experimental advances inenhanced oil recovery Open?Access
文章信息
College of Geosciences, China University of Petroleum, Beijing 102249, China; College of Petroleum Engineering, China University of Petroleum, Qingdao, Shandong 266555, China;College of Geosciences, China University of Petroleum, Beijing 102249, China;College of Petroleum Engineering, China University of Petroleum, Qingdao, Shandong 266555, China;Department of Geological Science & Engineering, Missouri University of Science & Technology, Rolla, 65409-0410, USA;Geological and Scientific Research Institute, SINOPEC Shengli Oilfield Company, Dongying, Shandong 257015, China;Geological and Scientific Research Institute, SINOPEC Shengli Oilfield Company, Dongying, Shandong 257015, China
文章摘要
and evolution of reservoir wettability were critically reviewed to better understand the complexity of wettability due to interactions in crude oil-brine-rock system, with introduction of different wetting states and their infl uence on fl uid distribution in pore spaces. The effect of wettability on oil recovery of waterflooding was then summarized from past and recent research to emphasize the importance of wettability in oil displacement by brine. The mechanism of wettability alteration by different surfactants in both carbonate and sandstone reservoirs was analyzed, concerning their distinct surface chemistry, and different interaction patterns of surfactants with components on rock surface. Other concerns such as the combined effect of wettability alteration and interfacial tension (IFT) reduction on the imbibition process was also taken into account. Generally, surfactant induced wettability alteration for enhanced oil recovery is still in the stage of laboratory investigation. The successful application of this technique relies on a comprehensive survey of target reservoir conditions, and could be expected especially in low permeability fractured reservoirs and forced imbibition process.
關鍵詞
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Wettability alteration, reservoir, enhanced oil recovery (EOR), surfactant